Drum stick



FIG. 1 is a top, front and right side isometric view of a drum stick showing my new design;

FIG. 2 is a right side elevational view thereof, the left side being a mirror image;

FIG. 3 is a front elevational view thereof; and

FIG. 4 is a rear elevational view thereof. 

The ornamental design for a drum stick, as shown and described. 